Can You Combine The Rb26 And Rb25?

[Icekallt]

Hi all!

My little questions are: Can you take rb26dett engine block and head and use rb25det internals? of course forged rods and pistons and rb25 crank or does this make the pistons go to high and hit the head?

As I have been told is that the rb26dett engine block can take more punishment then the rb25, is it so? ore is it that the rb25 internals are weaker?

Sry if my spelling is a little of, Im from sweden and dont speak ore write english regular! =)

Cheers

Edited May 30, 2009 by Icekallt

[lachlanw]

your english is way above acceptable . if you keep 25 pistons rod and crank together it will be fine . the blocks are the same (as far as size) .

[Icekallt]

your english is way above acceptable . if you keep 25 pistons rod and crank together it will be fine . the blocks are the same (as far as size) .

Okey! but does the rb26 block handle more power ore is that just a myth?

My build is being based on a T51-r kai and I might have to lift my rev limit a bit so then the rb26 head are a better start point =)

So im then on the look out for a rb26 head and block =)

[89CAL]

if your gonna use the 26 head and block... why not just use 26 internals as well?

[Cjmartz2k]

The regular 26 block and the 25 block are the same strength from what I've seen. Actually, the 25 block looks like it has a little more webbing on it to me. It's the guts of the 25 that make it weaker.

[The Dan]

There is absolutely no advantage running either one. The only RB26 block that is better is the N1.

If anything, due to the stroke being slightly smaller (2mm) that makes the RB25 rotating assembly better equiped to handle higher RPM but it's bugger all. Rod length is the same so meh.

[Icekallt]

I believe i have read it is esier to make the rb26 head to handle higher rpm´s due to that the rb25 has hydralic lifters?

How much rpm can you make the rb25 head to handle?

[The Dan]

I believe i have read it is esier to make the rb26 head to handle higher rpm´s due to that the rb25 has hydralic lifters?

How much rpm can you make the rb25 head to handle?

9000rpm

[Icekallt]

9000rpm

I have send an email to you guys at ERD =)

Talk more there! =)

[-_-StRyDeR-_-]

wont go wrong with Dan from Elite

[Beer Baron]

just stick with the RB26 head, block and RB26 internals. it's not like forged RB25 internals are any cheaper. and there'd be no point in installing standard RB25 pistons, rods and crank into an RB26 block and head. you may as well use the standard RB26 gear if you're going to do that.

yes the RB26 head is better than RB25. solid lifters vs hydraulic and of course it comes with the ability to use the nice GTR 6 throttle inlet and forward facing plenum.